Wall polishing machine

ABSTRACT

A wall polishing machine comprises a handle. The handle comprises at least two longitudinally arranged rod components. Each of the rod components is disposed with a dust guiding pipe therein. In any pair of adjacent rod components, the dust guiding pipe of a first rod component is exposed from the first rod component and has an outwardly exposed end which is inserted into a second rod component to connect to the dust guiding pipe of the second rod component, and secure connection is attained by means of a clamping component. As the handle is designed as being formed by at least two longitudinally arranged rod components connected via a clamping component, each of the rod components can be packed after being disassembled when the machine is not in use, therefore offering convenience in storage and carrying to users.

BACKGROUND OF THE INVENTION

The present invention relates to a wall polishing machine for polishing and cleaning wall surfaces.

German Patent No. DE69615879C2 discloses a polishing machine with long handle for polishing and cleaning wall surfaces. It comprises a hollow handle and a polishing head. The polishing head can be swingingly installed on a front end of the hollow handle. The polishing head comprises a polishing plate and a suction hood. An electric motor is installed on a rear end of the handle and activates the rotation of the polishing plate in the polishing head via flexible shafts. The rotating plate polishes and cleans the walls. The handle is relatively long and so it is convenient for polishing taller walls and the top of walls. However, the handle is integrally formed and can neither be folded nor disassembled, causing a lot of inconvenience for the storage or carrying of the polishing machine with long handle.

BRIEF SUMMARY OF THE INVENTION

The object of the present invention is to overcome the aforesaid disadvantages now present in the prior art by providing a wall polishing machine with a handle that can be disassembled. It does not only offer more convenience in storage and carrying, but also guarantees the steadiness of dust removal.

To attain the aforesaid objects of invention, the present invention adopts the following technical proposal:

A wall polishing machine comprising a handle. The handle comprises at least two longitudinally arranged rod components. Each of the rod components is disposed with a dust guiding pipe therein. In any pair of adjacent rod components, the dust guiding pipe of a first rod component is exposed from the first rod component and has an outwardly exposed end which is inserted into a second rod component to connect to the dust guiding pipe of the second rod component, and secure connection is attained by means of a clamping component.

An end surface of the outwardly exposed end of the dust guiding pipe of the first rod component is disposed with an opening. A limiting groove is disposed on a side wall of the opening. A limiting block is disposed on an inner wall of the opening.

The dust guiding pipes between the first rod component and the second rod component are connected via a sealed sleeve. An annular limiting groove is disposed on one end of an inner wall of the sealed sleeve. One side of the annular limiting groove is disposed with an annular slot. An other end of the inner wall of the sealed sleeve is disposed with a through-hole, from which the limiting block extends into the sealed sleeve.

The outwardly exposed end of the dust guiding pipe of the first rod component inserts into one end of the sealed sleeve, with the limiting block sliding into the limiting groove through the opening to fit with the limiting groove, while an end of the outwardly exposed end of the dust guiding pipe of the first rod component butts against a side of the annular limiting groove on which the annular slot is not disposed. An end section of the dust guiding pipe of the second rod component is inserted into an other end of the sealed sleeve and engages with the annular slot.

The clamping component comprises a clamping sleeve, an adjusting nut, an eccentric clamping device and a connecting shaft pin. The outwardly exposed end of the dust guiding pipe of the first rod component inserts into the clamping sleeve. A channel extends axially upwards from a circumferential wall of the clamping sleeve. Two support plates which are arranged parallel to each other extend outwardly from the channel. One of the support plates is fixed on the second rod component, and an other one of the support plates is disposed in suspension.

The two support plates are each opened with a corresponding installation hole. The connecting shaft pin is installed in the installation holes with its two ends exposed therefrom. The adjusting nut is threadedly connected to one end of the connecting shaft pin and is disposed external to the support plate which is disposed in suspension. The eccentric clamping device is movably connected to an other end of the connecting shaft pin and is disposed external to the support plate which is fixed on the second rod component.

The circumferential wall of the clamping sleeve is covered with a layer of anti-skid mat.

The adjusting nut and the eccentric clamping device are exposed from the second rod component.

The present invention also comprises a polishing head, an electric motor and a soft hose for dust suction. One end of the soft hose for dust suction is connected to a dust suction hole of the polishing head, while an other end of the soft hose for dust suction is connected to the dust guiding pipe arranged on the rod component disposed at a foremost end.

The present invention has the following advantages in comparison to the prior art:

1. As the handle is designed as being formed by at least two longitudinally arranged rod components connected via clamping components, each of the rod components can be packed after being disassembled when the machine is not in use, therefore offering convenience in storage and carrying to users.

2. As the dust guiding pipes of the adjacent rod components are connected via the sealed sleeve, the leakage of dust via their connection point can be avoided, thereby effectively guaranteeing the steadiness of dust removal.

BRIEF DESCRIPTION OF THE DRAWINGS

The following is a detailed description of the present invention with reference to the drawings and the embodiment.

FIG. 1 is a schematic view of the structure of the wall polishing machine according to the present invention.

FIG. 2 is a partial enlarged view of part I in FIG. 1.

FIG. 3 is a schematic view of the structure of the sealed sleeve according to the present invention.

FIG. 4 is a schematic view of the structure of the clamping component according to the present invention.

FIG. 5 is a schematic view of the structure of the opening and the limiting groove according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 1 to FIG. 5, the present embodiment is illustrated with an example in which the handle comprises two rod components.

The wall polishing machine according to the present invention comprises a handle 11, a polishing head 12, an electric motor 13 and a soft hose for dust suction 14. The handle 11 comprises a first rod component 1 and a second rod component 2 which are longitudinally arranged. A first dust guiding pipe 3 and a second dust guiding pipe 4 are respectively fixed in the first rod component 1 and the second rod component 2. A rear end of the first dust guiding pipe 3 is outwardly exposed from the first rod component 1. A clamping component 5 is arranged on an inner wall of the second rod component 2 at a front end of the second dust guiding pipe 4. The rear end of the first dust guiding pipe 3 passes through the clamping component 5 and is connected to the front end of the second dust guiding pipe 4. By clamping the rear end of the first dust guiding pipe 3 with the clamping component 5, the first rod component 1 and the second rod component 2 are fixedly connected together. Similarly, by loosening the clamping component 5, the first rod component 1 and the second rod component 2 can be disassembled and packed, offering a great extent of convenience in storage and carrying.

One end of the soft hose for dust suction 14 is connected to the dust suction hole of the polishing head 12, while the other end is connected to a front end of the dust guiding pipe 3. In this way, the dust resulted from polishing can be removed through the soft hose for dust suction 14, the first dust guiding pipe 3 and the second dust guiding pipe 4.

An opening 31 is arranged on a rear end surface of the first dust guiding pipe 3. One side wall of the opening 31 is disposed with a limiting groove 32. A limiting block 6 is fixed on an inner wall of a front end of the second rod component 2. The first dust guiding pipe 3 and the second dust guiding pipe 4 are connected via a sealed sleeve 7. A rear end of an inner wall of the sealed sleeve 7 is disposed with an annular limiting groove 71. A rear end surface of the annular groove 71 is disposed with an annular slot 72, while the front end of the second dust guiding pipe 4 is inserted into a rear end of the sealed sleeve 7 and engages with the annular slot 72. A front end of the inner wall of the sealed sleeve 7 is disposed with a through-hole 73, from which the limiting block 6 extends into the sealed sleeve 7. The rear end of the first dust guiding pipe 3 passes through the clamping component 5 to insert into a front end of the sealed sleeve 7. In the insertion process, the limiting block 6 first slides over the opening 31; when it slides to a pre-determined position, the limiting block 6 can be inserted into the limiting groove 32 by rotating the first dust guiding pipe 3 and the second dust guiding pipe 4 in relation to each other. At this moment, the rear end surface of the first dust guiding pipe 3 butts against the side of the annular limiting groove 71 on which the annular slot 72 is not disposed, thereby connecting the first dust guiding pipe 3 and the second dust guiding pipe 4. As such, the dust transmitted from the first dust guiding pipe 3 to the second dust guiding pipe 4 would not leak via their connection point due to the presence of the sealed sleeve 7, thereby guaranteeing the steadiness of dust absorption.

The clamping component 5 comprises a clamping sleeve 51, an adjusting nut 52, an eccentric clamping device 53 and a connecting shaft pin 54. The rear end of the first dust guiding pipe 3 inserts into the clamping sleeve 51. A channel 511 extends axially upwards from a circumferential wall of the clamping sleeve 51. Two support plates 512 and 513 which are arranged parallel to each other extend outwardly from the channel 51. The support plate 513 is fixed on the second rod component 2, while the support plate 512 is disposed in suspension. The two support plates 512 and 513 are each opened with a corresponding installation hole 514. The connecting shaft pin 54 is installed in the installation holes 514 with its two ends exposed therefrom. The adjusting nut 52 is threadedly connected to one end of the connecting shaft pin 54 and is disposed external to the support plate 512. The eccentric clamping device 53 is movably connected to the other end of the connecting shaft pin 54 and is disposed external to the support plate 513. Both the adjusting nut 52 and the eccentric clamping device 53 are exposed from the second rod component 2. While clamping, by rotating the eccentric clamping device 53, the connecting shaft pin 54 and the adjusting nut 52 would move inwards under the effects of the eccentric ring. At the same time, the adjusting nut 52 would move the support plate 512 inwards. As the width of the channel 511 gradually decreases, the inner diameter of the clamping sleeve 51 also decreases. The rear end of the first dust guiding pipe 3 positioned inside the clamping sleeve 51 would be clamped. As such, the first rod component 1 and the second rod component 2 would be fixedly connected together. By rotating the adjusting nut 52, the purpose of adjusting the tightness of the clamping sleeve 51 can be attained.

The inner circumferential wall of the clamping sleeve 51 is covered with a layer of anti-skid mat 55, thereby increasing the stability of the tightening of the rear end of the first dust guiding pipe 3 by the clamping sleeve 51. 

1. A wall polishing machine comprising a handle, which is characterized in that the handle comprises at least two longitudinally arranged rod components; each of the rod components is disposed with a dust guiding pipe therein; in any pair of adjacent rod components, the dust guiding pipe of a first rod component is exposed from the first rod component and has an outwardly exposed end which is inserted into a second rod component to connect to the dust guiding pipe of the second rod component, and secure connection is attained by means of a clamping component.
 2. The wall polishing machine as in claim 1, which is characterized in that an end surface of the outwardly exposed end of the dust guiding pipe of the first rod component is disposed with an opening; a limiting groove is disposed on a side wall of the opening; a limiting block is disposed on an inner wall of the opening.
 3. The wall polishing machine as in claim 2, which is characterized in that the dust guiding pipes between the first rod component and the second rod component are connected via a sealed sleeve; an annular limiting groove is disposed on one end of an inner wall of the sealed sleeve; one side of the annular limiting groove is disposed with an annular slot; an other end of the inner wall of the sealed sleeve is disposed with a through-hole, from which the limiting block extends into the sealed sleeve.
 4. The wall polishing machine as in claim 3, which is characterized in that the outwardly exposed end of the dust guiding pipe of the first rod component inserts into one end of the sealed sleeve, with the limiting block sliding into the limiting groove through the opening to fit with the limiting groove, while an end of the outwardly exposed end of the dust guiding pipe of the first rod component butts against a side of the annular limiting groove on which the annular slot is not disposed; an end section of the dust guiding pipe of the second rod component is inserted into an other end of the sealed sleeve and engages with the annular slot.
 5. The wall polishing machine as in claim 1, which is characterized in that the clamping component comprises a clamping sleeve, an adjusting nut, an eccentric clamping device and a connecting shaft pin; wherein the outwardly exposed end of the dust guiding pipe of the first rod component inserts into the clamping sleeve; a channel extends axially upwards from a circumferential wall of the clamping sleeve; two support plates which are arranged parallel to each other extend outwardly from the channel; one of the support plates is fixed on the second rod component, and an other one of the support plates is disposed in suspension.
 6. The wall polishing machine as in claim 5, which is characterized in that the two support plates are each opened with a corresponding installation hole; the connecting shaft pin is installed in the installation holes with its two ends exposed therefrom; the adjusting nut is threadedly connected to one end of the connecting shaft pin and is disposed external to the support plate which is disposed in suspension; the eccentric clamping device is movably connected to an other end of the connecting shaft pin and is disposed external to the support plate which is fixed on the second rod component.
 7. The wall polishing machine as in claim 6, which is characterized in that the circumferential wall of the clamping sleeve is covered with a layer of anti-skid mat.
 8. The wall polishing machine as in claim 7, which is characterized in that the adjusting nut and the eccentric clamping device are exposed from the second rod component.
 9. The wall polishing machine as in claim 1, which is characterized in that the present invention also comprises a polishing head, an electric motor and a soft hose for dust suction; one end of the soft hose for dust suction is connected to a dust suction hole of the polishing head, while an other end of the soft hose for dust suction is connected to the dust guiding pipe arranged on the rod component disposed at a foremost end. 